Event: Mini League

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Opponent	Rating	Result
Pradeep Bhosale	1640	1 - 0
Paul Hardy	1509	1 - 0
Neil Griffiths	1571	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1973 = (4720 + 400 * (3 - 0)) / 3)